1. The centrifugal fan changes the flow direction of the medium in the air duct, while the axial fan does not change the flow direction of the medium in the air duct;
2, the former installation is more complex
3, the former motor and fan are generally connected through the shaft, the latter motor generally in the fan;
4, the former is often installed in the air conditioning unit inlet and outlet, boiler drum, fan, and so on. The latter is usually installed in the middle of the air duct or the front end of the air duct.
In addition, there is a diagonal (mixed flow) fan, the wind pressure coefficient is higher than the axial fan, and the flow coefficient is larger than the centrifugal fan.
Fill the gaps between the axial flow fan and centrifugal fan. Meanwhile, the utility model has the characteristics of simple and convenient installation.
The mixed flow (or axial thrust) fan combines the characteristics of axial and centrifugal fans, although it looks more like a conventional axial fan.
The curved plate blade is welded to the conical steel hub. Change the flow by changing the angle of the blade in the upper inlet housing of the impeller.
The casing can have an open entrance, but more commonly, it has a right angled bend to allow the motor to be placed outside the pipe. The excretory shell expands slowly to slow down the flow of air or gas and converts kinetic energy into useful static pressure.